CN105397216A - Combined processing-type electrode used for machining sealing grooves of aero-engine guide blades - Google Patents

Combined processing-type electrode used for machining sealing grooves of aero-engine guide blades Download PDF

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Publication number
CN105397216A
CN105397216A CN201510901353.3A CN201510901353A CN105397216A CN 105397216 A CN105397216 A CN 105397216A CN 201510901353 A CN201510901353 A CN 201510901353A CN 105397216 A CN105397216 A CN 105397216A
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China
Prior art keywords
copper
electrode
tungsten block
groove
block
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Pending
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CN201510901353.3A
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Chinese (zh)
Inventor
任凤英
刘建
朱冰玉
裴聪
周林
夏艳
罗培真
王春笋
李惠
苏展弘
李成刚
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Sichuan Chengfa Aviation Science & Technology Co Ltd
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Sichuan Chengfa Aviation Science & Technology Co Ltd
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Priority to CN201510901353.3A priority Critical patent/CN105397216A/en
Publication of CN105397216A publication Critical patent/CN105397216A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/22Electrodes specially adapted therefor or their manufacture
    • B23H7/24Electrode material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/22Electrodes specially adapted therefor or their manufacture

Abstract

The invention provides a combined processing-type electrode used for machining sealing grooves of aero-engine guide blades. The combined processing-type electrode comprises an electrode body, an electrode base, a clamping head, a first copper-tungsten alloy block, a second copper-tungsten alloy block, first electrode bodies and second electrode bodies. The first electrode bodies are located at the end of the first copper-tungsten alloy block and integrated with the first copper-tungsten alloy block. The second electrode bodies are located at the end of the second copper-tungsten alloy block and integrated with the second copper-tungsten alloy block. The first copper-tungsten alloy block and the second copper-tungsten alloy block are fixed to the two ends of the bottom surface of the electrode base respectively. The shapes of the first electrode bodies and the shapes of the second electrode bodies are consistent with the shapes of sealing grooves to be machined in large margin plates of the guide blades and the shapes of sealing grooves to be machined in small margin plates of the guide blades respectively, and the positions of the first electrode bodies and the positions of the second electrode bodies are matched with the positions of the sealing grooves to be machined in the large margin plates of the guide blades and the positions of the sealing grooves to be machined in the small margin plates of the guide blades respectively. The clamping head comprises a main shaft connecting part and a base connecting part, wherein the shape of the main shaft connecting part is matched with a main shaft head of an electro-discharge machine tool, and the base connecting part is provided with a threaded hole. The main shaft connecting part penetrates through a clamping head installing through hole formed in the electrode base, and the base connecting part is in threaded connection with the electrode base.

Description

To obturage the Combined machining formula electrode of groove for processing aero-engine guide vane
Technical field
The invention belongs to aero-engine guide vane manufacturing technology field, particularly a kind ofly to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane.
Background technology
Guide vane bears high temperature and the most severe part of thermal shock in aero-engine parts, and its condition of work is very severe.Guide vane is except being subject to larger pneumatic work with except unstable pulsating load, and be also in the encirclement of high-temperature fuel gas, the temperature of working environment is high and cold and hot change large, and being heated of guide vane is seriously uneven.For reducing the air loss of aero-engine, improving effect of obturaging, needing to process groove of obturaging on guide vane.On the large listrium that groove of obturaging is distributed in guide vane respectively and little listrium, because the groove depth of groove of obturaging is comparatively dark, groove width is narrower, Working position degree and required precision high, thus difficulty of processing is large.And, the structure of guide vane itself is very complicated, this further increases again the difficulty of processing of groove of obturaging, along with the development of aero-engine, multi-joint guide blade structures has been widely used in new work engine, relative to simply connected guide vane, multi-joint guide blade structures structure is more complicated, and the difficulty of processing of its groove of obturaging is larger.
Guide vane is made by the high temperature alloy with excellent elevated temperature strength and hardness usually, and high temperature alloy is typical difficult-to-machine material, the non-constant of its machinability, the normal groove of obturaging adopting electrical discharge machining process processing guide vane.Existing slot machining of obturaging adopts the large and small listrium made by red copper to obturage the movable machined electrode of groove, slot machining electrode of being obturaged by large and small listrium respectively assembles on two electrodes bases, is then separately fixed on electric spark machine tool and processes the groove of obturaging on the large and small listrium of guide vane separately.Due to large and small listrium obturage slot machining electrode all in flake and made by red copper, loss in process is very fast, the average electrode often processed a guide vane and just need more to renew, due to the Working position degree of groove of obturaging and requirement on machining accuracy high, thus require very high to the assembly precision of electrode, and it is consistent with the relative position of electrodes base frequently to change electrode when electrode is difficult to ensure to assemble at every turn, easily cause electrode position to occur fluctuation, and then the position degree of the groove that causes obturaging is difficult to ensure.Further, the independent groove of obturaging processed on large and small listrium of processing also also exists the low problem of working (machining) efficiency separately.Meanwhile, because electrode is made by red copper and in flake, there is the deficiency of insufficient strength, obturaging in slot machining process, electrode is easily out of shape, and then affects machining accuracy, and the passing rate of processing of groove of obturaging is extremely low.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and to obturage the Combined machining formula electrode of groove, to improve working (machining) efficiency and the passing rate of processing of groove of obturaging for processing aero-engine guide vane.
Provided by the inventionly to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane, comprise electrode and electrodes base, also comprise chuck, the first copper-tungsten block, the second copper-tungsten block, for process large listrium obturage groove the first electrode and to obturage the second electrode of groove for processing little listrium
First electrode is positioned at the end of the first copper-tungsten block and is integrated with the first copper-tungsten block, second electrode is positioned at the end of the second copper-tungsten block and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are separately fixed at the two ends of electrodes base bottom surface, the shape of the first electrode and the second electrode, position respectively on listrium large with guide vane and little listrium the shape of groove of obturaging to be processed consistent, position matches, first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by the first copper-tungsten block and the second copper-tungsten block Milling Process shaping,
The main shaft connecting portion that the main tapping that described chuck comprises shape and electric spark machine tool matches and base connecting portion with threaded hole, main shaft connecting portion installs through hole through the chuck that electrodes base is arranged and base connecting portion is threaded with electrodes base.
In technique scheme, the two ends of electrodes base are provided with inspection hole, are respectively used to detection first electrode and the position degree of the second electrode after Milling Process is shaping.
In technique scheme, the first copper-tungsten block and the second copper-tungsten block are equipped with dowel hole and screwed hole, the first alloy block and the second alloy block are located afterwards by alignment pin and electrodes base is threaded connection.
In technique scheme, the thickness of described first copper-tungsten block and the second copper-tungsten block is 35 ~ 45mm.
In technique scheme, the first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by CNC milling machine to the first copper-tungsten block and the second copper-tungsten block Milling Process shaping.
In technique scheme, the copper content of described first copper-tungsten block and the second copper-tungsten block is 10% ~ 50%.
Compared with prior art, the present invention has following beneficial effect:
1. the invention provides obturaging the Combined machining formula electrode of groove for processing aero-engine guide vane of a kind of new structure, this Combined machining formula electrode secures two pieces of copper-tungsten blocks on electrodes base, two electrodes adopting the mode of Milling Process to be processed into the structure of shape and the position groove of obturaging to be processed respectively with guide vane on large listrium and little listrium and position on two pieces of alloy blocks to match, after export license, the mode of Milling Process is adopted again to process corresponding electrode to two pieces of copper-tungsten blocks, significantly can reduce the frequency changing electrode like this, avoid causing because frequently changing electrode the problem that electrode position fluctuates and the groove position degree of obturaging that causes cannot ensure, further, two electrodes are processed the groove of obturaging on the large listrium of guide vane and little listrium simultaneously, can increase substantially working (machining) efficiency, substitute red copper as making the material of electrode using copper-tungsten, the intensity of copper-tungsten is larger, and in use electrode is not easy distortion, be conducive to improving obturage groove machining accuracy, improve passing rate of processing.
2. because the electrodes base of Combined machining formula electrode of the present invention is provided with the inspection hole being respectively used to detection first electrode and the position degree of the second electrode after Milling Process is shaping, and adopt CNC milling machine Milling Process first electrode and the second electrode, above-mentioned factor is all conducive to the machining accuracy of guarantee first electrode and the second electrode, thus provides powerful guarantee for the obturage machining accuracy of groove and position degree of guide vane.
3. due to the first copper-tungsten block of Combined machining formula electrode of the present invention and the second copper-tungsten block being equipped with dowel hole and screwed hole, described copper-tungsten block is located afterwards by alignment pin and electrodes base is threaded connection, thus when copper-tungsten block with to can not Milling Process becomes electrode again time, this connected mode is conducive to the copper-tungsten block more renewed quickly and easily.
4. experiment shows, obturage compared with the movable machined electrode of groove with the existing large and small listrium of employing, be the basin of the large and small listrium of the multi-joint guide vane of processing equally, back of the body sagittal plane is obturaged groove, adopt Combined machining formula electrode machining of the present invention, the passing rate of processing of groove obturaged improves more than 60%, processing cost reduces more than 30%, and the process-cycle shortens more than 50%, and each organizes the first electrode and the second electrode on average can process 8 ~ 10 multi-joint guide vanes.
Accompanying drawing explanation
Fig. 1 of the present inventionly to obturage the structural representation of Combined machining formula electrode of groove for processing aero-engine guide vane;
Fig. 2 is the A direction view of Fig. 1;
Fig. 3 is the structural representation of the multi-joint guide vane of groove of obturaging to be processed in embodiment 3;
Fig. 4 is the structural representation of groove of obturaging in embodiment 3 on multi-joint guide vane large listrium basin sagittal plane and back of the body sagittal plane;
Fig. 5 is the structural representation of groove of obturaging in embodiment 3 on multi-joint guide vane little listrium basin sagittal plane and back of the body sagittal plane;
Fig. 6 is the K1-K1 view of Fig. 4 and the K2-K2 view of Fig. 5;
In figure, 1-electrodes base, 2-chuck, 2-1-main shaft connecting portion, 2-2-base connecting portion, the 3-the first copper-tungsten block, the 4-the second copper-tungsten block, the 5-the first electrode, the 6-the second electrode, 7-inspection hole, 8-alignment pin, 9-screw, 10-listrium basin sagittal plane, 11-little listrium basin sagittal plane, 12-large listrium back of the body sagittal plane, 13-little listrium back of the body sagittal plane, 14-large listrium basin sagittal plane and the groove of obturaging on the groove of obturaging on back of the body sagittal plane, 15-little listrium basin sagittal plane and back of the body sagittal plane greatly.
Detailed description of the invention
Below by embodiment, the present invention is specifically described; what be necessary to herein means out is; embodiment is only for the present invention is further illustrated; limiting the scope of the invention can not be interpreted as; person skilled in art content according to the present invention can make some nonessential improvement and adjustment is specifically implemented, but so concrete enforcement still should belong to protection scope of the present invention.
Embodiment 1
In the present embodiment, for process aero-engine guide vane obturage groove Combined machining formula electrode structural representation as shown in Figure 1, the A direction view of Fig. 1 as shown in Figure 2, this Combined machining formula electrode comprise electrodes base 1, chuck 2, first copper-tungsten block 3, second copper-tungsten block 4, for process large listrium obturage groove the first electrode 5 and to obturage the second electrode 6 of groove for processing little listrium
First electrode 5 is positioned at the end of the first copper-tungsten block 3 and is integrated with the first copper-tungsten block, second electrode 6 is positioned at the end of the second copper-tungsten block 4 and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are provided with dowel hole and screwed hole, first copper-tungsten block and the second copper-tungsten block are by being fixed on the two ends of electrodes base 1 bottom surface by screw 9 behind alignment pin 8 location, the two ends of electrodes base are also provided with inspection hole 7, the shape of the first electrode 5 and the second electrode 6, position respectively on listrium large with guide vane and little listrium the shape of groove of obturaging to be processed consistent, position matches, first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by CNC milling machine to the first copper-tungsten block and the second copper-tungsten block Milling Process shaping, the thickness of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 35mm, and the copper content of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 10wt%.
The main shaft connecting portion 2-1 that the main tapping that described chuck 2 comprises shape and electric spark machine tool matches and base connecting portion 2-1 with threaded hole, main shaft connecting portion 2-1 install through hole through the chuck that electrodes base is arranged and base connecting portion 2-1 is fixed on electrodes base by screw 9.
Embodiment 2
In the present embodiment, for process aero-engine guide vane obturage groove Combined machining formula electrode structural representation as shown in Figure 1, the A direction view of Fig. 1 as shown in Figure 2, this Combined machining formula electrode comprise electrodes base 1, chuck 2, first copper-tungsten block 3, second copper-tungsten block 4, for process large listrium obturage groove the first electrode 5 and to obturage the second electrode 6 of groove for processing little listrium
First electrode 5 is positioned at the end of the first copper-tungsten block 3 and is integrated with the first copper-tungsten block, second electrode 6 is positioned at the end of the second copper-tungsten block 4 and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are provided with dowel hole and screwed hole, first copper-tungsten block and the second copper-tungsten block are by being fixed on the two ends of electrodes base 1 bottom surface by screw 9 behind alignment pin 8 location, the two ends of electrodes base are also provided with inspection hole 7, the shape of the first electrode 5 and the second electrode 6, position respectively on listrium large with guide vane and little listrium the shape of groove of obturaging to be processed consistent, position matches, first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by CNC milling machine to the first copper-tungsten block and the second copper-tungsten block Milling Process shaping, the thickness of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 45mm, and the copper content of the first copper-tungsten block 4 and the second copper-tungsten block 5 is 50wt%.
The main shaft connecting portion 2-1 that the main tapping that described chuck 2 comprises shape and electric spark machine tool matches and base connecting portion 2-1 with threaded hole, main shaft connecting portion 2-1 install through hole through the chuck that electrodes base is arranged and base connecting portion 2-1 is fixed on electrodes base by screw 9.
Embodiment 3
In the present embodiment, the using method of Combined machining formula electrode of the present invention is provided, the large listrium basin sagittal plane 10 of the Combined machining formula electrode machining multi-joint guide vane of aero-engine power turbine as shown in Figure 3 adopting embodiment 1 or embodiment 2 to provide, little listrium basin sagittal plane 11, large listrium back of the body sagittal plane 12, four grooves of obturaging on little listrium back of the body sagittal plane 13, wherein, the large listrium basin sagittal plane of multi-joint guide vane and the structural representation of the groove 14 of obturaging on back of the body sagittal plane are as shown in Figure 4, the little listrium basin sagittal plane of multi-joint guide vane and the structural representation of the groove 15 of obturaging on back of the body sagittal plane are as shown in Figure 5, Fig. 6 is the K1-K1 view of Fig. 4 and the K2-K2 view of Fig. 5, multi-joint guide vane is made by high temperature alloy K438, the processing request of above-mentioned groove of obturaging is: groove width 0.8 ± 0.1mm, groove depth 4 ± 0.2mm, Tolerance of Degree of position operate as follows:
(1) groove of obturaging on the large listrium basin sagittal plane 10 of multi-joint guide vane and little listrium basin sagittal plane 11 is processed: guide vane is placed in slot machining fixture of obturaging, ensure that location can be rearward, with pressing plate, guide vane is compressed, the fixture fixing guide vane is fixed on the work top of electric spark machine tool, Combined machining formula electrode is fixed on the main shaft of electric spark machine tool by the chuck on base, make the first electrode and the second electrode position to be processed respectively on alignment guide blade large listrium basin sagittal plane and little listrium basin sagittal plane, spark machined adopts the pulse power, adjust the voltage of spark machined, electric current and discharging gap, and make to be full of electric spark processing liquid between electrode and position to be processed, start electric spark machine tool, make Combined machining formula electrode relatively obturage groove depth direction by setting feeding rate spark machined is carried out to the position to be processed on guide vane large listrium basin sagittal plane and little listrium basin sagittal plane, after slot machining of obturaging on this sagittal plane completes, guide vane is taken out from fixture, with obturaging, groove special measuring tool detects, result show the to obturage machining accuracy of groove and position degree and surface quality all meets the requirements.
(2) groove of obturaging on the large listrium back of the body sagittal plane 12 of multi-joint guide vane and little listrium back of the body sagittal plane 13 is processed: the guide vane of step (1) completion of processing is placed in slot machining fixture of obturaging, ensure that location can be rearward, with pressing plate, guide vane is compressed, the fixture fixing guide vane is fixed on the work top of electric spark machine tool, Combined machining formula electrode is fixed on the main shaft of electric spark machine tool by the chuck on base, the position to be processed on sagittal plane carried on the back by alignment guide blade large listrium back of the body sagittal plane and little listrium respectively to make the first electrode and the second electrode, spark machined adopts the pulse power, adjust the voltage of spark machined, electric current and discharging gap, and make to be full of electric spark processing liquid between electrode and position to be processed, start electric spark machine tool, make Combined machining formula electrode relatively obturage groove depth direction by setting feeding rate to guide vane large listrium the back of the body sagittal plane and little listrium the back of the body sagittal plane on position to be processed carry out spark machined, after slot machining of obturaging on this sagittal plane completes, guide vane is taken out from fixture, with obturaging, groove special measuring tool detects, result show the to obturage machining accuracy of groove and position degree and surface quality all meets the requirements.
In the process that groove of obturaging is processed, when after the first electrode and the second export license, by the first electrode after loss and the second electrode mill off, proceed to obturage after adopting CNC milling machine, in the mode of Milling Process, the copper-tungsten be fixed on electrodes base is processed into electrode again the processing of groove, when the first copper-tungsten block and the second copper-tungsten block are with to after can not being milled into the first electrode and the second electrode, the first copper-tungsten block on electrodes base and the second copper-tungsten block are replaced with new and Milling Process first electrode and the second electrode again.
Obturage compared with the movable machined electrode of groove with the existing large and small listrium of employing, the groove of obturaging processing above-mentioned multi-joint guide vane equally, the passing rate of processing of groove obturaged improves more than 60%, each organizes the first electrode and the second electrode on average can process 8 ~ 10 multi-joint guide vanes, processing cost reduces more than 30%, and the process-cycle shortens more than 50%.

Claims (10)

1. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane, comprise electrode and electrodes base (1), characterized by further comprising chuck (2), the first copper-tungsten block (3), the second copper-tungsten block (4), for process large listrium obturage groove the first electrode (5) and to obturage second electrode (6) of groove for processing little listrium
First electrode (5) is positioned at the end of the first copper-tungsten block (3) and is integrated with the first copper-tungsten block, second electrode (6) is positioned at the end of the second copper-tungsten block (4) and is integrated with the second copper-tungsten block, first copper-tungsten block and the second copper-tungsten block are separately fixed at the two ends of electrodes base bottom surface, the shape of the first electrode (5) and the second electrode (6), position respectively on listrium large with guide vane and little listrium the shape of groove of obturaging to be processed consistent, position matches, first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by the first copper-tungsten block and the second copper-tungsten block Milling Process shaping,
The main shaft connecting portion (2-1) that the main tapping that described chuck (2) comprises shape and electric spark machine tool matches and base connecting portion (2-2) with threaded hole, main shaft connecting portion (2-1) installs through hole through the chuck that electrodes base is arranged and base connecting portion (2-2) is threaded with electrodes base.
2. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 1, it is characterized in that the two ends of electrodes base are provided with inspection hole (7).
3. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 1, it is characterized in that the first copper-tungsten block and the second copper-tungsten block are equipped with dowel hole and screwed hole, the first copper-tungsten block and the second copper-tungsten block are located afterwards by alignment pin (8) and electrodes base is threaded connection.
4. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 1 or 2 or 3, it is characterized in that the thickness of described first copper-tungsten block (4) and the second copper-tungsten block (5) is 35 ~ 45mm.
5. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 1 or 2 or 3, it is characterized in that the first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by CNC milling machine to the first copper-tungsten block and the second copper-tungsten block Milling Process shaping.
6. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 4, it is characterized in that the first electrode and the second electrode be after the first copper-tungsten block and the second alloy block are fixed on electrodes base by CNC milling machine to the first copper-tungsten block and the second copper-tungsten block Milling Process shaping.
7. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 1 or 2 or 3, it is characterized in that the copper content of described first copper-tungsten block (4) and the second copper-tungsten block (5) is 10% ~ 50%.
8. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 4, it is characterized in that the copper content of described first copper-tungsten block (4) and the second copper-tungsten block (5) is 10% ~ 50%.
9. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 5, it is characterized in that the copper content of described first copper-tungsten block (4) and the second copper-tungsten block (5) is 10% ~ 50%.
10. to obturage the Combined machining formula electrode of groove for processing aero-engine guide vane according to claim 6, it is characterized in that the copper content of described first copper-tungsten block (4) and the second copper-tungsten block (5) is 10% ~ 50%.
CN201510901353.3A 2015-12-08 2015-12-08 Combined processing-type electrode used for machining sealing grooves of aero-engine guide blades Pending CN105397216A (en)

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CN110561038A (en) * 2019-08-16 2019-12-13 成都和鸿科技有限公司 device and method for machining special-shaped hole of stationary blade of heavy gas turbine
CN111545853A (en) * 2020-06-20 2020-08-18 贵阳航发精密铸造有限公司 Two-way adjustable integral electrode chuck
CN112620838A (en) * 2021-03-10 2021-04-09 成都和鸿科技有限公司 Integral machining method for guide vane basin dorsal sealing groove
CN114226894A (en) * 2022-02-23 2022-03-25 成都和鸿科技股份有限公司 Electrode tool setting method for machining turbine blade and electrode connecting piece
CN116197469A (en) * 2023-01-10 2023-06-02 西安万威机械制造股份有限公司 Method for machining special-shaped deep groove of high-temperature alloy difficult-to-machine material

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110561038A (en) * 2019-08-16 2019-12-13 成都和鸿科技有限公司 device and method for machining special-shaped hole of stationary blade of heavy gas turbine
CN111545853A (en) * 2020-06-20 2020-08-18 贵阳航发精密铸造有限公司 Two-way adjustable integral electrode chuck
CN112620838A (en) * 2021-03-10 2021-04-09 成都和鸿科技有限公司 Integral machining method for guide vane basin dorsal sealing groove
CN112620838B (en) * 2021-03-10 2021-06-25 成都和鸿科技有限公司 Integral machining method for guide vane basin dorsal sealing groove
CN114226894A (en) * 2022-02-23 2022-03-25 成都和鸿科技股份有限公司 Electrode tool setting method for machining turbine blade and electrode connecting piece
CN114226894B (en) * 2022-02-23 2022-05-17 成都和鸿科技股份有限公司 Electrode tool setting method for machining turbine blade
CN116197469A (en) * 2023-01-10 2023-06-02 西安万威机械制造股份有限公司 Method for machining special-shaped deep groove of high-temperature alloy difficult-to-machine material
CN116197469B (en) * 2023-01-10 2023-11-14 西安万威机械制造股份有限公司 Method for machining special-shaped deep groove of high-temperature alloy difficult-to-machine material

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